Container with a safety seal

ABSTRACT

A container, in particular a plastic container, preferably in the form of a pail, having a lid for closing the container. The lid having a receiving area in which, when the container is in the closed state, the container lip limiting the container opening engages and is held, mutually interacting catch members and sealing surfaces being provided in the receiving area of the lid and on the lip of the container opening. The catch members being configured such that when the container is in the closed state, the sealing surfaces are pressed together reliably to form seals, and, in particular, can only be released by destroying the lid and/or the rim.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of German Patent Application No. 10253 371.7, filed Nov. 15, 2002, and German Patent Application No. 102 60225.5, filed Dec. 20, 2002 and International Application No.PCT/EP03/11313, filed Oct. 13, 2003.

FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable.

REFERENCE TO MICROFICHE APPENDIX

Not applicable.

BACKGROUND OF THE INVENTION

This invention relates in general to container closures and specificallysealing container closures utilizing multiple latch-detent catchmembers.

Containers for the safe transport of liquid or pasty hazardoussubstances have been known for a long time. One feature that thesecontainers have in common is that they must be sufficiently leak-proofto prevent any escape of the transported hazardous substances. Secondly,they must be equipped with a closure that ensures safe closing of thecontainer even under extreme conditions. In particular, containers ofthis kind and their closures must withstand loads that may occur also inthe event of an accident, for example falling of the container from acertain height.

Containers of this type are known in the prior art and generallyinclude, in particular, pails or drum-like containers whose lids arescrewed on firmly to form a screw closure. To secure the closure, metalclips may be provided additionally, which press the lid onto thecontainer or prevent the screw closure from unscrewing. There are alsoclosure systems where the lid, after being fitted onto the container, isappropriately flanged to make the arrangement leak-proof. Systems arefurthermore known in which the lid or closure is bonded or welded, or inwhich additional sealing films are bonded or welded.

The disadvantage common to all of these containers or closure systems isthat they are complicated and difficult to handle; this is particularlyproblematic in view of the need for largely automated handling of suchobjects, including the closure process.

SUMMARY OF THE INVENTION

The object of this invention is thus to provide a leak-proof andsecurely closable container that is suitable for the transport of liquidor pasty hazardous substances, both the production and handling of saidcontainer being uncomplicated and effective.

This object is established by means of a container having the featuresof claim 1. Useful embodiments form the subject matter of the dependentclaims.

The container of the invention, which is preferably configured as a pailor in drum-like form, has a lid for closing the container, the lidhaving a receiving area in which, in the closed state, the lip of thecontainer opening engages and is held there. In so far, the container ofthe invention is based on known containers.

Compared to the prior art, however, this invention pursues a completelydifferent approach to solve the problem at hand. The container of theinvention is based on the realization that by providing positivelyinterconnectable catch members and correspondingly interacting sealingsurfaces, it is possible to close a container securely and tightly. Theuse of positive connections formed by latch-detent hook pairs or catchmembers and of appropriate sealing surfaces ensures that both handlingand production are kept simple. Effective use of the container is thusensured.

The positive connections formed by catch members are preferablyconfigured such that the lid of the container can only be loosened if atleast part of the lid of the container is destroyed. The user thus has averifiable first-opener guarantee, since only a container that has neverbeen opened is undamaged, whereas a container that has already beenopened will have a visibly damaged lid.

According to a preferred embodiment of the container, the receiving areaof the lid and the lip of the container opening, which engage on closureof the container, i.e. the catch members that form the positiveconnection, and the sealing surfaces are engineered such that putting onof the lid, i.e. closing of the container, is effected by way oftranslational movement of the lid relative to the container. It isparticularly advantageous if the lid is simply pushed onto or clippedonto the container from above. This permits automatic closing of thecontainer by a machine, since a translational movement or pushing orclipping on operations can easily be performed by a machine.

According to a preferred embodiment, at least two, preferably three ormore pairs of catch members are provided within the receiving area ofthe lid and the lip of the container opening, since a plurality ofcatch-member pairs makes it possible to secure the lid at several pointsand thus helps to close the container securely. The term “catch-memberpair” does not refer here to just two catch members that lock positivelytogether, but may also refer to a large number of catch members, which,however, on account of their similar configuration and identical mode ofaction, are deemed to be just one catch-member pair. This applies, forexample, to catch members formed simply by a sub-division.

According to a preferred embodiment of the container, the at least two,preferably three or more catch-member pairs are engineered such that atleast one of these catch-member pairs is configured differently to theother catch-member pairs in such manner that the movement necessary todisengage some of the catch-member pair differs from that for othercatch-member pairs. This means that not all the catch-member pairs canbe disengaged at once by way of a single movement of part of the lid,that is, of the receiving area of the lid, or of the lip of thecontainer opening. On the contrary, the different movements required todisengage the catch-member pairs in their entirety ensure that a complexmovement is necessary. It has proved particularly useful to provide atleast two kinds of catch-member pairs, which require opposing movementsto disengage the catch. A particularly interesting approach here, forexample, is to necessitate a portion of the receiving area to move bothoutwards and inwards for purposes of opening the container. Thismeasure, in particular, thus goes beyond that of the need for different,in particular opposing, movements to disengage circumferential catchmembers located on opposing sides. Here, it is performed thatcatch-member pairs that opposing movement to disengage are located closeby each other, for example, one above the other require.

The provision of different kinds of catch-member pairs that differ inthe different type of movement needed to disengage the catch has theadditional advantage that in this way, with the members that form thepositive connection, an adequate clamping action may also be generatedfor the sealing surfaces, provided likewise in the receiving area of thelid and at the lip of the container opening. Even if the pressure of thesealing surfaces against each other is already effected by appropriatedimensioning of the lid and the container opening, the provision ofdifferent kinds of catch-member pairs, as described above, ensures anadditional contact pressure that can be reliably upheld in many stresssituations.

In addition to separately located sealing surfaces, it is of advantageto provide matching sealing surfaces on the catch members forming thepositive connection, since, particularly where different kinds ofcatch-member pairs are used that necessitate movements in differentdirections in order to disengage the catch, mutual keying can beeffected which results in the positively-locking catch members pressingagainst each other to a certain extent and thus forming sealingsurfaces.

According to a preferred embodiment, additional seals may be provided inthe receiving area of the lid and/or in the lip area of the container,particularly in the form of inserted or injected gaskets.

To realize the first-opening guarantee, as it is called, it may also beadvantageous to provide a predetermined partition location in thereceiving area of the lid and/or in the lip area of the containeropening in order that those areas which guarantee a safe andunreleasable connection can be easily detached. In particular, it is ofadvantage here to provide—in the receiving area of the lid or on the lipof the container opening—a predetermined partition location whichresults in being able to detach that part of the receiving area and/orof the lip that has the differently functioning catch-member pair(s), asthis kind of catch-member pair, in particular, may prevent the positiveconnection from being released.

According to a preferred embodiment, the cross-section of the receivingarea of the lid is essentially an inverted U-shape, the receiving areabeing open at the bottom in order to accommodate, from there, the lip ofthe container opening. The legs of the U-shaped receiving area straddlethe lip of the container opening and hold it firmly, in positive-lockingmanner, by means of the catch members. The sealing surfaces, meanwhile,are pressed firmly together, thus ensuring the sealing effect.

While it is of course possible to provide a large number of differentcombinations of detent hooks, latches, snap-in grooves etc., andappropriately configured sealing surfaces, the preferred embodiment ofthis invention has an inverted U-shaped receiving area formed by anouter and an inner leg, two latches or detent hooks are located on theinside of the outer leg, these two latches or detent hooks interactingwith two latches located on the outside of the lip of the containeropening. On the outer leg of the inverted U-shaped receiving area thereis located a further detent hook that interacts with an undercutshoulder in the lip of the container opening, the undercut shoulderbeing provided in a double-walled portion of the lip, on the outer armof the lip. By locating detent hooks or latches both on the inside andon the outside of the outer leg of the inverted U-shaped receiving area,and configuring corresponding undercuts or catch members on the lip areaof the container opening, two different types of catch-member pairs areformed which differ in that the catch formed by the one type ofcatch-member pair can be released by moving the outer leg outwards,whereas to release the catch formed by the other type of catch-memberpair, the outer leg must be moved inwards.

This simple configuration of catch-member pairs ensures, for one thing,that the lid can easily be put onto the container by a vertical downwardmovement of the lid. For another, this triple locking system ensuresthat the lid is fitted securely on the container. The different kind ofcatch-member pairs with the opposing opening movements ensuresadditionally that the lid cannot be removed without incurring damage.

To permit easy opening of the container without the use of anyparticular specialty tools, and to ensure that the lid is easily put on,a constriction is engineered in the wall of the outer leg of theinverted U-shaped receiving area, so that in this area an integralhinge, or film hinge, forms, which constitutes a lower segment of theouter leg. One effect of this film hinge is that the lower segment ofthe outer leg can perform the movements necessary to get past thelatches or detent hooks and the undercuts during closure of thecontainer, that is, when the lid is put on. The film hinge, i.e. theconstriction, additionally offers the possibility of detaching the lowersegment by simply cutting along the film hinge with a cutting tool suchas a knife. Since the receiving-area catch members for two differentcatch-member pairs are preferably provided in the lower segment of theouter leg, only one catch remains after detachment of the lower segment.This last catch may be released via a slight outward movement of theouter leg of the receiving area. This single remaining catch permitscontinued use and renewed closure of the container after it has firstbeen opened, although it does not provide for secure closure with afirst-opening guarantee. This single remaining catch also permitscontinued use and re-closure of the container after it has first beenopened, although secure closure with a first-opening guarantee is nolonger ensured.

To permit uniform closure of the container, it is preferable if thecatch members or catch-member pairs are located circumferentially aroundthe container opening and lid; interruption or sub-division of a catchmember by recesses, lands, etc. may result in the formation of acorresponding plurality of catch members, although, as defined in thisinvention, the purpose of uniform closure and treatment as one catchmember or two catch members making up one catch-member pair is upheld.

Thanks to the measures described above, standard materials can be usedfor the container of the invention, without the need for specialmeasures. Polyolefin-based plastics are preferred, in particularpolyethylene and polypropylene. The sealing aids preferably used inaddition need not fulfill any special requirements either regarding thechoice of material, although, depending on the application in question,special requirements regarding the choice of material may exist. Alonethe dimensioning of the components, for example the wall thicknesses,must be adjusted to suit the application in order to withstand thenecessary forces also in the case of exceptional loads, caused, forexample, by accidents.

Further advantages, characteristics and features of this inventionbecome clear from the following detailed description of an embodimentand the attached drawings. The figures are purely schematic.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 shows a partially cut-away side view of a container with its lidon;

FIG. 2 shows details of FIG. 1 at various stages of closure (FIGS. 2 a,2 b and 2 c);

FIG. 3 shows a cross-sectional view along the line D-D of FIG. 2 b;

FIG. 4 shows a cross-sectional view along the line D-D of FIG. 2 c;

FIG. 5 shows a perspective view of the container with its lid on;

FIG. 6 shows a perspective partial view of the container with its lidoff;

FIG. 7 shows two containers stacked one inside the other;

FIG. 8 shows a transverse view (FIG. 8 a) of two lids stacked on top ofthe other, and details (FIG. 8 b) of FIG. 8 a; and

FIG. 9 shows a top view of the container lid.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

FIG. 1 shows a partially cut-away side view of a closed container 1according to the invention, that is, with its lid 2 on. In theembodiment shown, the container 1 is in the form of a pail to which, tofacilitate carrying, a rotatable handle 27 is attached.

As can be seen in the partially cut-away section of FIG. 1, thecontainer 1 has a slightly inward-arching or convex closed bottom 30that has supporting feet 31 at its outer edge. There is thus a smallspace between the closed bottom 30 and the surface on which the pailstands. The container 1 furthermore has a slightly conical, albeitessentially cylindrical, outer shape terminating in an open end, so thatempty containers can be nested.

FIGS. 2 a to 2 c show details of the upper portion of the cutawaysection of FIG. 1, with the receiving area 4 and the lip 3 of thecontainer open end, at various stages of closure of the container 1.

In FIG. 2 a, the container is still completely open. The lid 2 isresting lightly on the open end of the container, that is, on the lip 3of the open end of the container. As is clearly evident in this detailedview, the receiving area 4 at the periphery of the lid 2 is essentiallyinverted U-shaped, with the receiving area open at the bottom so as toaccommodate from there the element 9 of the lip 3 of the open end of thecontainer. The receiving area 4 of the lid 2 thus has two legs 5 and 6,namely an outer leg 5 and an inner leg 6, which are interconnected inthe connecting area 7 at the foot of the U. The inner part 32 of the lid2 is connected via the lip connection 22 with the receiving area 4. Thelip connection 22 forms an opposing U with the inner leg 6 of thereceiving area 4, so that the inner part 32 of the lid 2 is located atthe level of the upper portion of the receiving area 4. The receivingarea 4 in the embodiment shown forms a circumferential stacking edge 4a, so that closed containers 1 can be stacked one above the other. Anyshifting relative to one another is largely prevented by the stackingedge 4 a of the receiving area 4.

On the inside of the outer leg 5 of the receiving area 4, two latches 12and 13 each in the form of a raised rib are provided, while on theoutside of the outer leg 5, almost at the bottom thereof, a detent hook14 is integral with the end of the outer leg 5. The latches 12 and 13and the detent hook 14 are spaced at approximately equal distances apartalong the outer leg 5. In the immediate vicinity of the latch 13, in thearea between the latch 12 and the latch 13, a constriction is providedin the outer leg 5 of the U-shaped receiving area 4, so that an integralhinge 15, or film hinge 15 is formed. The integral or film hinge on theinside of the outer leg 15, immediately adjacent to the latch 13, ispartially formed by a grooved depression 2 a along the inside of theouter leg 15.

The side of the inner leg 6 that is opposite to the inside of the outerleg 5 is engineered as a smooth sealing surface. This sealing surface isangled somewhat relative to the vertical.

Directly in the area 7 connecting the legs 5 and 6 of the invertedU-shaped receiving area 4, in the curvature of the U-shaped receivingarea, a space 29 is provided for accommodating a gasket that is notshown.

At its open end, the container I has a lip 3 that is double-walled inthe lower portion. In this lower portion of the lip 3 of the container 1there is, in addition to the inner element 9, also an outer element 8that forms the double wall. The lip 3 of the container 1 is thus made upof two sections, namely an upper first section in which the lip 3defines the element 9 that is single-walled, and a lower second sectionin which the lip 3 defines the outer element 8 and the inner element 9,making it double walled. In the first upper section of the lip 3 of thecontainer 1, on the outside of the element 9, two detent hooks 10 and 11are provided which, in cross-section, are configured in cross-section asalmost triangular shaped projections. The second lower section of thelip 3 of the container 1 has openings 25 at the top. At the same time,the outer element 8 with the edge of the opening 25 forms an undercutshoulder 21.

On the inside of the inner element 9 of the lip 3 of the container 1, asmooth sealing surface 17 is engineered, which matches the sealingsurface 16 on the outside surface of the inner leg 6 of the receivingarea 4 of the lid.

The closing stages are shown in FIGS. 2 b and 2 c. FIG. 2 b shows thaton closure of the container 1 with the lid 2, the element 9 is insertedinto the U-shaped receiving area 4, with the latch 13 first sliding pastthe detent hook 10, while the lower end of the outer leg 5 with thedetent hook 14 is introduced into the opening 25 of the double-walledsection of the lip 3 of the container 1.

As the container 1 is closed further with the lid 2, as shown in FIG. 2c, the latch 12 also slides past the detent hook 10, and the latch 13past the second detent hook 11. The latches 12 and 13 and the detenthooks 10 and 11 are configured such that they have complementary leadinginclined surfaces which permit the latches to slide past the hooks inthe direction of closure, whereas they are prevented from sliding backagain by the positive-locking catch due to the configuration of thedetent hook. At the same time, on complete closure, the lower the partof the outer leg 5 is accommodated completely in the double-walledsection of the lip 3, the detent hook 14 coming to rest beneath theundercut shoulder 21. It becomes evident here that on closure, the lowersegment 33 of the outer leg 5 is on the one hand pressed outwards by thedetent hook 11, whereas, on the other hand, the lower segment 33 of theouter leg 5 has to be bent inwards by the detent hook 14 in order for itto be inserted into the opening 25 of the double-walled lip 3. This ismade possible, in particular, also by the configuration of the filmhinge 15, which permits a different movement of the lower segment 33depending on the stage of closing with the lid 2.

In the completely closed state as shown in FIG. 2 c, it is evident thatthe latches 12 and 13 form positive connections with the detent hooks 10and 11, while the detent hook 14 forms a positive connection with theundercut shoulder 21. To release all three latch-detent hook memberpairs, it would be necessary to move the outer leg 5 outwards todisengage the latch-detent hook member pairs 12 and 10 and 11 and 13,while an inward movement would be necessary to disengage thelatch-detent hook member pair 14 and 21. As a result of the leadinginclined surface 13, which is supported on the latch 11, the catcheffect of the latch-detent hook member pair 14 and 21 is furtherreinforced, as a lever effect acts in the direction of the catchposition. It is therefore impossible to release the catch mechanismwithout destroying the receiving area 4, i.e. without cutting ordetaching the lower segment 33 along the film hinge 15. Only when thelower segment 33 has been detached by cutting along the film hinge canthe still-remaining catch formed by latch-detent hook member pair 12 and10 be released. This has added advantage that after the container hasbeen opened the first time, which is visible to everyone due to thelower segment 33 remaining in the double-walled section of the lip, thecontainer is still suitable for continued use and can be closed againwith only the latch-detent hook member pair 12 and 10.

Besides the formation of the latch-detent hook member pairs, a seal isgenerated on closure of the container due to the sealing surfaces 16 and17 coming into direct contact, in particular, being squeezed together byappropriate adjustment of the dimensions of the lid 2 to those of thecontainer 1 or the lip 3 of the container, and to the appropriateconfiguration of the catch mechanism between the receiving area 4 andthe lip 3. In addition, the latch-detent₁₃ hook member pairs, inparticular the latch-detent hook member pair 12 and 10, also presssealing surfaces together, in this case the sealing surfaces 18 and 19,as shown in FIG. 2 c. In the curvature zone 29 of the U-shaped receivingarea an additional gasket that is not shown may be included, which ispressed by the upper end of element 9 against the inside surface of theconnecting area 7 in the receiving area 4, thus producing an additionalsealing effect.

As is also evident from FIG. 2 c, the positive connection formed by thelatch-detent hook member pair 13, 11 is further reinforced by a groove20 engineered on the inside at the film hinge 15, into which groove thedetent hook 11 is engineered to engage.

FIGS. 3 and 4 show, in cross-section, details from FIGS. 2 b and 2 c, ineach case along the line D-D. FIGS. 3 and 4 show how the element 9engages between the outer leg 5 and the inner leg 6 on closure of thecontainer 1. The cross-section views make it clear that both between theouter element 8 and the inner element 9 of the lip 3 and between theinner leg 6 and the lip connection 22 of the lid 2, partitions 23 andreinforcing walls 24 are provided, so that the second, lower,double-walled section of the lip 3 has openings 25 at the top that areessentially rectangular in cross-section. The lower the area of theouter leg 5 is accordingly provided with complementary recesses intowhich the partitions 23 can engage in the closed state.

FIG. 4, like FIG. 2 c, show part of the handle 27, which is likewisehinged in the double-walled portion of the lip 3.

FIG. 5 shows a perspective view of the container 1 with its lid 2 on it.This perspective view shows especially well how the handle 27 isrotatably hinged to the double-walled portion of the lip 3, inparticular to the outer element 8.

The partitions 23, the reinforcing walls 24 and the openings 25 can alsobe seen very clearly in this projection. FIG. 5 also shows theconfiguration of the stacking supports 26, which are located on theoutside of the container 1, underneath the lip 3, in the vicinity of thehinging points for the handle 27. FIG. 7 shows more clearly how thestacking supports work.

The lid 2 also has a pull means or handle 28 attached to it, with whichthe lid 2 may be removed after the lower segment 33 of the outer leg 5of the receiving area 4 (as shown above) has been detached.

FIG. 6 likewise shows a perspective view of part of the container 1 andof a lid 2 which has been removed therefrom. It is additionally evidentfrom this projection that the outer leg 5 of the receiving area 4, atthe lower end of which leg the detent hook 14 is provided, has aplurality of recesses 34 so that the outer leg 5 can engage the openings25 and the partitions 23 have room in the area of the recesses 34.

FIG. 7 shows, in a partially cut-away side view, two containers 1 and 1′stacked one inside the other. It becomes clear here how the stackingsupports 26 and 26′ work, which, when the containers are nested, rest onthe upper edge of the element 9. This prevents the nested pails fromjamming and ensures a defined load distribution. The side viewillustrated in FIG. 7 also shows clearly that the detent hooks 10 and 11are engineered as circumferential ridges on the lip 3, that is, on theouter periphery of the element 9.

As is evident from FIGS. 8 a and 8 b, not only the containers can benested, but also the lids, as shown in FIG. 8 a. As illustrated in thedetailed drawing of FIG. 8 b, the connecting area 7 of the receivingarea 4 forms a circumferential stacking rim into which the lower end ofthe inner leg 6 of the lid 2′ positioned above can engage. In thecross-sectional view illustrated in FIGS. 8 a and 8 b, however, areinforcing wall 23 prevents the inner leg 6 from being clearlyapparent. The outer leg 5 is dimensioned such that the lower end of theleg 5 with the detent hook 14 is somewhat shorter than the lower end ofthe inner leg 6, so that the outer leg 5 ends above the connecting area7 of a lid 2 positioned underneath.

FIG. 9 shows, in a top view of the lid 2, the uniform subdivision of theperimeter of the lid 2 with the receiving area 4 by the reinforcingwalls 24 and the recesses 34 and detent hooks 14. Although, of course, alarge number of detent hooks are formed around the perimeter by therecesses 34, this plurality of detent hooks 14 is to be understood forthe purpose of this application as one catch member, since, inparticular, all the detent hooks 14 interact with the circumferentialundercut shoulder 21 and therefore form one latch-detent hook memberpair. By analogy, of course, and in the meaning of the term as it isused here, one latch-detent hook member pair can also be formed from alarge number of detent hooks and latches.

1. A container, in particular a plastic container, preferably in theform of a pail, having a lid for closing the container, said lid havinga receiving area in which, when said container is in the closed state,the container lip limiting the container opening engages and is held,wherein mutually interacting latch-detent hook members and sealingsurfaces are provided in said receiving area of said lid and on said lipof said container opening, said catch members being configured such thatwhen said container is in the closed state, said sealing surfaces arepressed together reliably to form seals, and, in particular, can only bereleased by destroying said lid and/or the rim.
 2. The container asclaimed in claim 1, wherein said receiving area of said lid and said lipof said container opening are engineered such that closure of saidcontainer with said lid is effected essentially by a translationalmovement or, in particular, by pushing or clipping said lid onto saidcontainer from above.
 3. The container as claimed in claim 1, wherein atleast two, preferably three or more latch-detent hook member pairs areprovided, at least one of said latch-detent hook member pair preferablybeing engineered such that the catch is released by way of a different,in particular an opposing movement to that required to disengage theother of said latch-detent hook member pairs, so that in order torelease the catch mechanism comprising differently acting saidlatch-detent hook member pairs, at least part of said lid's receivingarea or of said lip of said container opening must be moved in differentdirections, especially opposite directions.
 4. A container according asclaimed in claim 1, said sealing surfaces are provided separately fromsaid latch-detent hook members and/or on the catch members.
 5. Acontainer as claimed in claim 1, wherein at least one, preferablyseveral of said seals are provided in said receiving area and/or on saidlip of said container opening, said seals preferably being in the form,in particular, of inserted or injected gaskets.
 6. A container asclaimed in claim 1, the wherein said receiving area of said lid and/orsaid lip of said container opening and further comprises a predeterminedpartition location for detachment of a part of said receiving areaand/or of said lip, in particular of that part that has the differentlyfunctioning said latch-detent hook member pair(s), so that onlyidentically functioning said latch-detent hook member pairs remain, inorder to permit openings of said container closed with said lid.
 7. Acontainer as claimed in claim 1, wherein the cross-section of saidreceiving area is essentially U-shaped and is open at the bottom, saidlip of said container opening being at least partially, in a firstsection, straight in said cross-section and being defined between twolegs of said U-shaped receiving area, and, further comprising detenthooks, latches and/or engagement grooves that interlock on closure beingprovided on an inner side of one of said leg and on the correspondingside of the first section of said lip, while on the inside of the otherof said leg and on the corresponding side of said first section of saidlip of said container opening, said sealing surfaces are provided. 8.The container as claimed in claim 7, wherein at least two of said detenthooks are provided on the inside of said outer leg of said receivingarea, and at least one of said detent hook on the outside of said outerleg.
 9. The container as claimed in claim 7, wherein said lip of saidcontainer opening is at least partially—in particular in a secondsection extending over a portion of said lip insertable into the saidreceiving area—double-walled, said outer leg of said receiving areaengaging at least partially in the space between the two walls of saidlip.
 10. The container as claimed in claim 9, further comprising anouter element in said second section of the double-walled lip has anundercut or a latch-detent hook member, which interacts with said detenthooks on the outside of said outer leg of said receiving area, and, inparticular, forms said latch-detent hook member pair which, comparedwith said latch-detent hook members on the inside of said outer leg ofsaid receiving area and with said latch-detent hook members on theoutside of said element of the first section of the double-walled lip ofsaid container opening, requires a different, in particular an opposing,opening movement in order to release said catch.
 11. A container asclaimed in claim 8, characterized in that said outer leg of saidreceiving area of said lid has a predetermined partition location in theform of a film hinge for the purpose of parting with a cutting tool, inparticular a knife, said predetermined partition location preferablybeing positioned such that the lower segment of said outer leg of saidreceiving area, which segment contains the two, in particulardifferently functioning, said latch-detent hook member pairs, isdetached and remains, in particular, in said double-walled portion ofsaid lip of said container opening.
 12. A container as claimed in claim7, wherein the connecting area of said legs of said receiving area,further comprises a gasket, in particular an O-ring, is provided, which,when said container is in the closed state, is pressed into saidreceiving area by the upper end of said lip of said container opening.13. A container as claimed in claim 1, wherein said catch members arearranged as circumferential hooks or latches on said lip of saidcontainer opening and/or on said receiving area.
 14. A container asclaimed in claim 1, wherein said container with said lid is securely andtightly closed at inside pressures of up to 1 bar, particularly up to0.8 bar in the case of liquid and pasty substances in particular, and,in particular, satisfied the UN licensing conditions for the transportof hazardous liquid substances.